Enum aws_sdk_quicksight::model::OtherCategories
source · #[non_exhaustive]
pub enum OtherCategories {
Exclude,
Include,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against OtherCategories
, it is important to ensure
your code is forward-compatible. That is, if a match arm handles a case for a
feature that is supported by the service but has not been represented as an enum
variant in a current version of SDK, your code should continue to work when you
upgrade SDK to a future version in which the enum does include a variant for that
feature.
Here is an example of how you can make a match expression forward-compatible:
# let othercategories = unimplemented!();
match othercategories {
OtherCategories::Exclude => { /* ... */ },
OtherCategories::Include => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when othercategories
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant OtherCategories::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
OtherCategories::Unknown(UnknownVariantValue("NewFeature".to_owned()))
and calling as_str
on it yields "NewFeature"
.
This match expression is forward-compatible when executed with a newer
version of SDK where the variant OtherCategories::NewFeature
is defined.
Specifically, when othercategories
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on OtherCategories::NewFeature
also yielding "NewFeature"
.
Explicitly matching on the Unknown
variant should
be avoided for two reasons:
- The inner data
UnknownVariantValue
is opaque, and no further information can be extracted. - It might inadvertently shadow other intended match arms.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Exclude
Include
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for OtherCategories
impl AsRef<str> for OtherCategories
source§impl Clone for OtherCategories
impl Clone for OtherCategories
source§fn clone(&self) -> OtherCategories
fn clone(&self) -> OtherCategories
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for OtherCategories
impl Debug for OtherCategories
source§impl From<&str> for OtherCategories
impl From<&str> for OtherCategories
source§impl FromStr for OtherCategories
impl FromStr for OtherCategories
source§impl Hash for OtherCategories
impl Hash for OtherCategories
source§impl Ord for OtherCategories
impl Ord for OtherCategories
source§fn cmp(&self, other: &OtherCategories) -> Ordering
fn cmp(&self, other: &OtherCategories) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq<OtherCategories> for OtherCategories
impl PartialEq<OtherCategories> for OtherCategories
source§fn eq(&self, other: &OtherCategories) -> bool
fn eq(&self, other: &OtherCategories) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<OtherCategories> for OtherCategories
impl PartialOrd<OtherCategories> for OtherCategories
source§fn partial_cmp(&self, other: &OtherCategories) -> Option<Ordering>
fn partial_cmp(&self, other: &OtherCategories) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moreimpl Eq for OtherCategories
impl StructuralEq for OtherCategories
impl StructuralPartialEq for OtherCategories
Auto Trait Implementations§
impl RefUnwindSafe for OtherCategories
impl Send for OtherCategories
impl Sync for OtherCategories
impl Unpin for OtherCategories
impl UnwindSafe for OtherCategories
Blanket Implementations§
source§impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.